AF due the 23rd and sore breasts already...

Shelby
<a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> tells me I'm 1dpo today but while I was changing clothes after work yesterday, my breasts felt sore and they're just as tender today. So confused... AF is 15 days away.. not even in the TWW!!! Anyone else experience this before? Btw- husband and I have been intimate everyday for the last 6 days.